Internal Force

Internal forces are forces and moments acting within a body.

Types of Internal Forces

Internal forces occur as axial forces, shear forces, and moments.

• An axial force acts on a member parallel to the member axis.
• A shear force acts normally to the member axis. A distinction is usually made between y-loading and z‑loading for a member.
• For moments, a distinction is made between the three loadings in the y- and z‑directions (bending) and about the longitudinal axis (torsion).

Member Internal Forces

Surface Internal Forces and Surface Stresses

Internal Forces in RFEM/RSTAB

In RFEM and RSTAB, it is possible to evaluate the determined internal forces in tables and graphically.

Selecting Member Internal Forces in Navigator

In RFEM, the surface and solid internal forces are also available.

Selecting Surface Internal Forces in Navigator